Thirty years of Neapolitan history (from 1942 to 1972) through the ups and downs of the Cavioli and Pagano families.

The film focuses on Murri; the token maverick cop. He is called in after a bunch of criminals pull off a successful prison break and spend the night picking off various informers and people they don't like. Murri investigates; hooking up with one of the criminal's nieces along the way. He uses his own methods; which mostly involve breaking all the rules, and thus comes under a lot of scrutiny from his superiors who don't take too kindly to the cop's way of working.

Returning from Switzerland to Rome, the boss prof. Salviati, called 'The Prince', finds his business compromised by Rudy, a small local bandit full of presumption, audacity and men ready to kill. Commissioner Baldi a young and brave employee, will fight against them with the help of an ex-employee Rampelli.

Italian crime movie from 1979 directed by Alfonso Brescia.